1 ### <a name="Documentation of the TWiki Imple"></a> Documentation of the TWiki Implementation (version TWiki-4.1.2, Sat, 03 Mar 2007, build 13046)
3 - [(1)](#implementation) Implementation Notes
4 - [(2)](#installation) Installation Notes
5 - [(3)](#upgrade) Upgrading Earlier Versions of TWiki
6 - [(4)](#authentication) TWiki Authentication
7 - [(5)](#login) TWiki Username vs. Login Username
8 - [(6)](#access) TWiki Access Control
9 - [(7)](#templates) TWiki Templates
10 - [(8)](#skins) TWiki Skins
11 - [(9)](#variables) TWiki Variables
12 - [(10)](#notification) Notification of Changes by Email
13 - [(11)](#category) TWiki Category Table
14 - [(12)](#administration) TWiki Administration
16 **_Note:_** Read the most up to date version of this document at <http://TWiki.org/cgi-bin/view/TWiki/TWikiDocumentation>
18 **_Related Topics:_** [[TWikiWeb]], [[TWikiHistory]], [[TWikiPlannedFeatures]], [[TWikiEnhancementRequests]].
20 <a name="implementation"> </a>
24 **(1) Implementation Notes**
26 <a name="installation"> </a>
30 **(2) Installation Notes**
32 <a name="upgrade"> </a>
36 **(3) Upgrading Earlier Versions of TWiki**
38 <a name="authentication"> </a>
42 **(4) TWiki Authentication**
48 **(5) TWiki Username vs. Login Username**
50 <a name="control"> </a>
54 **(6) TWiki Access Control**
56 <a name="templates"> </a>
60 **(7) TWiki Templates**
68 <a name="variables"> </a>
72 **(9) TWiki Variables**
74 <a name="notification"> </a>
78 **(10) Notification of Changes by Email**
80 <a name="category"> </a>
84 **(11) TWiki Category Table**
86 <a name="administration"> </a>
90 **(12) TWiki Administration**